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(No Model.)

. 3 Sheets-Sheet 1A., ENORTON 8v J; G.. HODGSON. SHEET METAL BARREL MACHINE.

No. 354,568. Patented Dec. 21, 1886.

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(No Model.)

E. NORTON 8v J. G. HODGSON. SHEET METAL BARREL MACHINE.

No. 354,568. i@ is Patented Dec. 21, 1886.

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E. NORTON & J.`G. HODGSON. SEEET YMETAL BAEEEL MACHINE.

No. 354,568. Patented Deo. 21, 1886.

UNITED 1- STATES PATENT OEEICE.

EDI/VIN NORTON AND JOHN G. IIODGSON, OF CHICAGO, ILLINOIS, ASSIGNORS TO EDWIN NORTON AND OLIVER V. NOITON, BOTH OF SAME PLACE.

SHEET-METAL-BARREL MACHINE.

SPECIFICATION forming part of Letters Patent No. 354,568, dated December 2l, 1886.

Application tiled September 3, 1886. Serial No. 212,568. (No model.) I

To all 10710772, it may concern.' end views ofthe mandrel and mold, showing Be it known that we, EDWIN NORTON and the position of the parts before and after the JOHN G. HoDGsoN, citizens of the United folds or ribs are squeezed. Figs. 6 and 7 are States, residing in Chicago, in the county of central longitudinal sections on lines 6 6 and 55 5 Cook and State of Illinois, haveinventedanew 7 7 of Figs. 4 and 5. Fig. S is, an enlarged and useful Improvement in Shcet-Metal-Barcross-section of the mandrel; and Fig. 9 is a rel Machines, of which the followingis a speciview of the end plate of the mandrel, which isV iication. removed in Figs. 41. and 5.

This invention relates to the manufacture of In said drawings, A represents the frame of 6o` IO sheet-metal barrel-form vessels having longithe machine.

tudinal tapering ribs or folds by which the sur- Bis the mold, consisting, preferably, of four plus stock is taken up at the ends and the barradially expansible or contractible segments. rel given its bilge or longitudinal curvature. Its interior is barrel shape, or conforms t In one process of manufacturing such vessels the shape of the body to be operated upon. 65 I the longitudinal folds are first spaced outl or The segments B are secured by dovetails b, partially formed, and then the sides or walls of or other suitable means, to radial slides B', the tapering folds are squeezed flat together, mounted in suitable guides, B2, on the frame thus completing the ribs or folds and giving of the machine, and operated by eccentrios B3 the body its bilge or longitudinal curvature; on the shafts B The eccentrics B3 press di-` 7o 2o The object of the present invention is to proreotly against friction-rollers Z1', j ournalcd on vide a machine for simultaneously squeezing the slides B, when forcing the segments in; the sides or Walls of such partially-formed lonward and against curved arms b2, secured to gitudinal folds together and givingthe body its said slides, when moving in the opposite ditrue barrel shape; and our invention consists, rection. 2 5 primarily, in connection with a mold conform- C is the hollow-core or head of the radiallying in shape to the barrel or sheet-metal body expansible circumfcrentially-contractible seg' to be operated upon, of an interior mandrel, mental mandrel. 'Ihis hollow core is furalso conforming in shape to said body, and nished with a series of longitudinal ribs or composed ofaseries of radially-expansible and projections, c, having inclined or cam faces c 8O 3o circumferentially approaching or contractible c', on which slide the radially-expansible cirjaws or segments, between which the walls cumferentially-closing segments or jaws D D of such partially formed folds or ribs are of the mandrel. It also has intermediate longrasped and squeezed together while said jaws gitudinal grooves or channelsz, in which the or segments are expanding radially to cause intermediate wedging-segments, D', move ra- 85 the body to conform accurately to the outer dially in and out.

mold. The circumferentially closing or contract- It also consists, in connection with such raing segments D D have radial Afaces d d, bedially-expansible, circumferentially-contractitween which the walls or slides n n of the,.par ble segmental mandril, of a radially expansitially-formed folds are clamped and squeezed 9o 4o ble or contractable outer mold. flat together. The segments D llave alsoin- It also consistsin the novel devices and novel clined or wedging faces d', which iit against combinations of devices herein shown and dethe corresponding faces,d2,of the intermediate p scribed, and more particularly pointed out in segments, D. Springs d3 serveto open or force the claims. apart the segments or jaws D D, and springs 95 In the accompanying drawings, which form d* to retract the Wedging-segments D. Guidea part of this specitication, and in which simipins d5, at the ends ofthe segments D, t in inlar letters of reference indicate like parts, Figclined guide-slots d6 in the end plates, D, and ure l'is a front View of a machine embodying serve to guide the movement of the segments our invention. Fig. 2 is a central vertical sec- D, and to hold them in place. A

tion on line2 2 of Fig. l. Fig. 3 is a sec- The radially-moving wedgiug-segmentsQD tion on line 3 3 of Fig. 2.l Figs. 4 and 5 are are mounted on or secured to a4 series of radi- IOC ally-sliding pins, E, which fit in suitable holes in the hollow core C, and which are simultaneously operated by a pin or wedge, F, having cone-faces fff, there being preferably three slides, E, to each segment D. The slidingpin or wedge F is operated from the driving-shaft G by a crank, g, and pitman y.

The slide B of the upper segment, B, of the mold is not furnished with the curved arm b2 1o to retract it, but is retracted by hand by means of a lever or arm, H, on the crank-shaft h, which is journaled on the frame A and connected with said slide B by a pivoted link, h. This crank-shaft also serves to hold this upper section of the mold elevated or retracted by simply turning the crank-arm l1.'z past its center, or past a vertical line extending through the axis of the crank-shaft. The object of this is to enable the operator to lower the upper 2o segment of the mold upon the meeting edges of the barrel-body N, and thus hold the flanges n n snugly together while the other sections of the mold are being closed around the body'. One of the shafts BL (the driving-shaft) is furnished with a driving-pulley, B5, and the others are connected with it by bevel-gears B6. The driving-shaft B4 is furnished with a stopclutch, K, for starting the shaft and stopping it at the end of each half-revolution. Any

I 3o ordinary form of clutch for this purpose may be used, and as the construction of such clutches is well known to those skilled in the art it is not deemed necessary to give a detailed description of the same.

G is the driving-pulley for the shaft G. The pulleys G and B" are driven by independent beltsfrom a counter-shaft in the building or factory where the machine is set up. The shaft G is also furnished with a stop-clutch, 4o K, similar to the clutch K, except that it operates to start said shaft and stop it at the end of each revolution instead of each half-revolution. The clutch Kis operated by the treadle k, and the clutch K by the lever 7c'.

The operation is as follows: The sheet-metal vessel N, with its longitudinal folds or ribs partially formed, as indicated in Fig. 4, is placed over the mandril D and inside the mold B, (the mold at this time being radially expanded and the mandril radially contracted) with the segments or jaws D D open or separated circumferentially. The operator adjusts the meeting edges or flanges n n together, and first lowers the uppersegment, B, of the mold upon the sheet-metal body, to keep said flanges or meeting edges n n in position. He then moves the clutch-treadle 7c, thus giving the shafts B4 a half-revolution and closing the segments B together upon the sheet metal body. He then moves the clutch-lever 7c,thus

causing the shaft G to make a complete revolution, thereby forcing in the pin or wedge F and expanding the wedges D radially, and

squeezing the walls n n of the partially-formed l6 5 vfold together between the radially-expanding and circumferentially-closing segments or jaws D D. The latter half of the revolution of the shaft G retracts the pin or wedge F, and the springs withdraw the wedges D and open the jaws D. By again moving the clutch-treadle lc the segments of the mold are withdrawn, and the squeezed body may be removed and replaced by another.

Our machine may be used for other purposes than for squeezing together the partiallyformed folds of sheet-metal barrel-form bodies. By simply making the segments D D to conform to a cylinder instead of a barrel in shape similar partially-formed folds on cylindrical bodies may be squeezed or pressed together.

When the wedging segments D are eX- panded, as shown in Fig. 5, they should conform to the same circle as the segments D, so as to support the sheet-metal body between the mandrel and the mold at all points.

The segments B of the mold are secured to the slidesBby the dovetail guides and grooves, as indicated in the drawings, to enable them to be adjusted individually endwise.

We claim- 1. The combination, with a mold, ofv a radially expansible circumferentially closing segmental interior mandrel, substantially as specified.

2. The combination,withabarrel-form mold, of a radially-expansible ci rcumferentially-closing segmental interior. barrel-form mandrel, substantially as specified.

3. The combination, with a radially-contractible segmental mold, of a radially-expansible circumferentially-closing segmental mandrel, substantially as specified.

4. rlhe combination, with a radially-expansible circumferentially-closng segmental mandrel, of a radially-contractible segmental mold, mechanism, substantially as described, for contracting all of the segments of the mold and retracting all the segments of said mold but ICO one, and a hand-crank shaft for retracting one of the segments of said mold, substantially as specified.

5. The combination, with a radially contractible segmental barrel-form mold, of a radially expansible circumferentially.- closing segmental barrel-formmandrel ,substantially as specified.

6. rIhe combination, with hollow core C, having longitudinal ribs c, furnished with inclined faces c', of segments or jaws D and wedgingsegments D', and means for expanding said wedging-segments D', substantially as specified.

7. The combination,with hollow core 0having longitudinal ribs c, furnished with inclined faces c', of segments or jaws D, wedging-segments D', radial slides E, and pin or wedge F, substantially as specified.

8. The combinatiomwith hollow core C, having longitudinal ribs c, furnished with inclined faces c', of segments or jaws D, wedging-segments D', two or more sets of radial slides E, and pin F, having two or more conefaces,f, substantially as specified.

9. The combination, with hollow core C, hav- IIO ing longitudinal ribs c, furnished with inclined faces c', of segments or jaws D and wedgingl segments D', Springs for opening said segments or jaws D, and springs for retracting said Wedgingsegments D', and means for expanding said Wedging-segments D', substantially as specified.

10. The combination, with a barrel -form mold, of radially-expansible circnmferentiallyclosing jaws or segments D and intermediate Wedging-segments, D', said segments D and D' being of barrel form, and means for expanding said Wedgng segments D', substantially as specified.

1l. The eo1nbination,with radially-contractible mold-segments B, of mechanism, substantially as described, for operating said moldsegments, radially expansible circumferen- EDWIN NORTON. JOHN GuHODGSON. Witnesses:

S. W. NORTON, O. R. SWIFT. 

